From: Navid Emamdoost <navid.emamdoost@gmail.com>
Date: Tue, 17 Sep 2019 03:31:23 +0000 (-0500)
Subject: rpmsg: char: release allocated memory
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=bbe692e349e2a1edf3fe0a29a0e05899c9c94d51;p=linux.git

rpmsg: char: release allocated memory

In rpmsg_eptdev_write_iter, if copy_from_iter_full fails the allocated
buffer needs to be released.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
---

diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c
index eea5ebbb5119a..c655074c07c2e 100644
--- a/drivers/rpmsg/rpmsg_char.c
+++ b/drivers/rpmsg/rpmsg_char.c
@@ -227,8 +227,10 @@ static ssize_t rpmsg_eptdev_write_iter(struct kiocb *iocb,
 	if (!kbuf)
 		return -ENOMEM;
 
-	if (!copy_from_iter_full(kbuf, len, from))
-		return -EFAULT;
+	if (!copy_from_iter_full(kbuf, len, from)) {
+		ret = -EFAULT;
+		goto free_kbuf;
+	}
 
 	if (mutex_lock_interruptible(&eptdev->ept_lock)) {
 		ret = -ERESTARTSYS;